Maintenance Flashcards
The flashpoint for Type II Dry-Cleaning Solvent is ____
140 degrees F (60 degrees C)
The flashpoint for Type III Dry-Cleaning Solvent is ____
200 degrees F (93 degrees C)
Do not ______. Bleaching or dying may cause a severe loss of belt strength. This loss of strength could allow the seat belt to break under stress
bleach or dye seat belt webbing
Pierce further recommends considering replacement of the belts at ____ , to reduce the potential failure of the seat belts caused by unapparent damage such as belt exposure to chemicals or UV radiation.
5-year intervals,
The cab should not be raised until the _____ and the truck has sat with the battery switch ______.
air conditioner has been shut-off / ON for at least 30 minutes.
The fluid in the cab lift system:
0-120º =
TES-389 approved
The fluid in the cab lift system:
Below 0º =
MIL-H-5606 (Mobil HFA or Equivalent)
To Lower Cab : Continue to depress the tether switch for at least ____ after the cab comes to rest.
5 seconds
Do not use Lithium base grease on disc brake calipers. Lithium base grease may not adequately ___. Only use ______.
lubricate the calipers. / Only use clay-based NLGI Grade numbers 1 or 2, or equivalent.
The front and rear axles use a _____.
Meritor EX225 air disc brake
If the bosses are within _____ of the end of the pins or less, remove the wheels and inspect the linings for replacement. Replace at ___ thickness.
1/4 inch (6.4mm) / 1/8 inch (3.2mm)
Replace the desiccant cartridge every ___ or more often depending on usage
2 to 3 years
The transmission shift selector features electronic _____
oil level monitoring, prognostics monitoring of oil life, filter life, and transmission health, as well as diagnostic code review.
Oil Life Monitor: While in Oil Life Monitor mode, press and hold the Mode button for ____. Or shift the gear ranges in the following sequence (do not pause for more than 3 seconds between shifts once you have started):
____
10 seconds / N-D-N-D-N-R-N
Filter Life Monitor: While in Filter Life Monitor mode, press and hold the Mode button for _____. Or, shift the gear ranges in the following sequence (do not pause for more than 3 seconds between shifts once you have started):
_______.
10 seconds / N-R-N-R-N-D-N
Transmission Fluid should be changed every ____ .
12,000 miles, 6 months, or 500 hours.
Conditions that indicate water and/or glycol in the fluid are:
-Rust or pitted transmission parts.
• Oil spewing out of the breather.
• Oil in the radiator.
• Gaskets blistered or wrinkled in uncompressed areas.
• Appearance of oil. Presence of water in oil when dispersed is a cloudy or gray, pink, or strawberry color.
• Steam from the breather.
A cold check may be made after initial start-up and the presence of transmission fluid has been confirmed (the sump fluid temperature is then typically ____
16-49° C (60-120° F)
Cold Check:
- Start the engine and run it at idle in neutral (N) for about one minute. Shift to ______ to clear the hydraulic circuits of air.
- Move the vehicle to a level surface, put the transmission in neutral (N), and set the parking brakes.
- With the engine idling, shift to ______ to clear air from the hydraulic circuits.
drive (D) and then to reverse (R) /
Cold Check:
- Shift to neutral (N) and leave the engine at idle.
- Remove the dipstick and wipe it clean. Insert the dipstick into the fill tube, pushing down until it stops.
- Remove the dipstick and observe the fluid level. If the fluid on the dipstick is within the ___, the level is satisfactory. If the fluid level is not within this band, add or drain fluid as necessary to bring the level within the COLD RUN band.
- Perform a Hot Check at the first opportunity after normal operating temperature _____ is reached
COLD RUN band / (71-93° C; 160-200° F)
Alternator : Proper belt tension is essential to avoid squealing, slipping, or throwing of alternator belts. Proper belt tension should be checked using a ______.
Burrows Tension Gauge or equivalent.
Batteries Terminals :
Make cable connections as corrosion resistant as possible by coating the connections with a ____. Tighten the cable clamps to the battery posts before applying the grease.
heavy general purpose grease or battery terminal protection product.
Batteries can be cleaned with a brush dipped in a _____ . Make sure the battery caps are tight to prevent the solution from entering the battery. After cleaning, flush with water.
baking soda or ammonia solution
Clean battery terminals with a _____. Keep terminals clean and tight. Make sure vent holes in the battery caps are open.
steel wool or a wire brush
